Car-coupling.



M. A. BROWN.

CAR COUPLING.

APPLICATION FILED Nov. lo, 1913.

1, 146,233. Patented July 13, 1915.

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ATTORNY MARK A. BROWN, 0F CHATTANOOGA, TENNESSEE.

CAR-COUPLING.

Specification of Letters Patent. i Patented July 13, 1915.

Continuation of application Serial No. 785,430, led August 18, 1913. This application filed November 10, 1913, Serial No. 800,193.

To all whom it may concern.' f

Be it known that I, MARK A. BROWN, a citizen ofthe United `States, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented a new and useful Car-Coupling, of which the following is a specification.

The invention relates to improvements in car couplings, and is a continuation of an application filed by me Aug. 18, 1913, Serial No. 785,430.

The object of the present invention is to improve the construction of car couplings, more especially the draw bar and the means for mounting thel same, and to provide a simple, efficient and comparatively inexpensive ball bearingcar coupling, adapted to be readily shifted in a direction laterally of the car by the operating means of the car coupling to arrange it in proper position for automatic coupling, and capable, when free to move, of automatically returning to a central position.

With these and other objects in View, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to withoutV departing from the spirit or sacrificing any of the advantages of the invention.

in the drawing Figure l is a plan view partly in section of a car coupling, constructed in accordance with this invention. Fig. 2 is a side elevation of the same, partly in section. Fig. 3 is a transverse sectional view on the liney 3 3 of Fig. 2. Fig. 4 is a detail perspective view of the ball bearing plate.

Like numerals of reference designate corresponding parts in all the figures of the drawing.

In the accompanying drawing in which is illustrated the preferred embodiment of the invention, l designates a draw head pro vided with a draw bar 2 having an oppositely inclined bottom face 3, extending downwardly and inwardly from the side face of the draw bar to the center thereof and arranged upon a seat formed by a ball bearing plate 4, mounted within a carrier iron 5l The carrier iron 5, which is suitably secured to the framework of the car, is preferably composed of spaced vertical sides 1 and a straight transversely disposed bottom connecting portion 6, as clearly illustrated in Fig. 3 of the drawing. The ball bearing plate, which has a fiat horizontal face 7, is fitted against the upper face of the bottom lConnecting portion 6 of the carrier iron, and 1t extends entlrely across the same and 1s provided at its side edges with depending fianges 8, fitting against the side edges of the f is oppositely inclined in a longitudinal direction to conform to the configuration of the oppositely inclined bottom face 3 of the draw bar 2, and the said upper face 9 inclining downwardly and inwardly from the ends of the bearing plate to the center thereof. The oppositely inclined portions of the upper face 9 of the bearing plate are rounded transversely 'of the bearing plate andvextend downwardly from the longitudinal center to the side edges thereof to prevent fric- `tional contact of the shank of the car coupling with the bearing plate should one end of the car coupling drop to a lower position than the other. By this construction, the upper face of the ball bearing plate is oppositely inclined both longitudinally and transversely. The ball bearing plate is provided in its upper face with a central longitudinal ball receiving groove 10 of substantially cygroove 10 by the oppositeiy curved 'e ftially overhanging walls thereoi` and als the sides ot the carrier iron7 which ci e tiends of the groove when the part e assembled. rlhe. series oi" antiit'riction oppositely inclined and are adapte ter the car coupling7 and they enwle saine to be easily shitted by a tralisvei knuckle unlocking shaft l2, or any other suitable, meansl for arranging the coupling in proper position tor autom coupling As the operating l att .is mounted on the car coupling :tor rfnary mov-ef" Y to lool: and release the knurld and has ne ion-- gitmlinal movement relative to the cancoilpling, it is adapted to shit'-L the la i either direction without atico tion ot' the locking mecha, bail bearing support tor permits the latter to move .the lateral swaying incident ot the train. rllhe opposite inclj. the groove i() is als adapted to Y balls centrally otl the bearing plat tiling the latter. so that there is i' bility oi the balls accidentally droppn out ot the groove when placing the bearing plate within the carrier iron or removing it, therefrom.

'.lhe ball bearing plat and the transverse connecting portion otl the carrier iron are provided with registering slots or openings 13 and 14, forming an outlet for cinders and other accumulation and preferably flared at the bottom, as illustrated in Fig. i2 of the drawing. Any cinders or dust dropping into the groove will be worked through the outlet opening and discharged from the ball bearing seat of the car coupling by the action ot' the balls.

lVhat is claimed isz- 1. A ear coupling including a carrier iron having spaced sides and a connecting portion, a seat arranged upon the connecting portion otl the carrier iron and provided with means for detachably interlocking it with the said iron, said seat being provided in its upper `face with a groove extending the entire length ot the seat and closed at its ends by the sides of the carrier iron, a draw bar, and a series ot antifriction balls arranged in the groove and supporting the draw bar, the walls ot' the groove partially embracing the major portion of the antiiiriction balls, whereby the latter are retained in the groove.

Q. A car coupling including a. carrier iron having spaced sides and a connecting portion. a draw bar provided with an oppositely inclined bottom face, a seat arranged upon the connecting portion of the carrier iron and provided with an oppositely inclined upper face having a longitudinal fvoove extending the entire length of the :Vid closed at. its ends by the sides of rer iron said groove being composed j/ositely inclined portions, and antion devices arranged in the groove and ...ing the draw bar and adapted to ine same.

. car coupling including a draw bar ed with an oppositely inclined bottom seat having an oppositely inclined "id provided therein with a groove v ot inclined portions and disposed self; w relation to the dn'aw bar7 z ot antiiriction balls arranged in the supporting the 'draw bar center the same. the walls ot partially embracing lthe major die anti-friction balls, whereby are retained in the said gre-ove,

for closing the ends et@ the 'afer being ot sutiicient length e balls to roll transversely i ear coupling including a carrier iron a iron and provided with an oppositely inclined upper tace and having a groeve extending along the bearing plate across the carrier iron, the ends ot rae groove being closed by the side portions l said carrier iron, antifriction devices eontined in. the groove by the walls thereof and projecting above the upper face ot' the bearing plate? and a ear coupling having a draw bar provided with an oppositely inclined bottoni face supported by the said antit'riction devices and automatically centered by the same.

5,. A car coupling including a draw bar provided with an oppositely inclined bottom 'face extending downwardly and inwardly from the sides ot' the draw bar to the center thereof., a scat having an oppositely .inclined upper tace extending upwardly and outwardly Jfrom the center of the seat to the. ends thereof., the upper face of the said seat being also inclined laterally from the ce ter to the side edges, and anti-friction devices mounted on the seat at the center thereof and supporting the draw bar.

in testimony, that ii claim the foregoing as niv own, l have hereto atlixed my signature in the presence ot two witnesses.

MARK A. BRGlVN. 

